Not having seen ROTS yet I should perhaps reserve judgement but generally I feel that the older viewer i.e. those who saw the original first time out have demanded too much from episodes 1 to 3 as we have preconceived notions as to how it should "feel".
If you had watched 1 to 3 without 4 to 6 never having been made there would not have been the same criticism of the later ones. Perhaps Lucas has been damned by making something so special in the first place.
Personally I liked episode one and did not find the young Anakin to be a poor actor. Lets be honest, apart from Haley Joel Osment is there any real child actors around?
If I have one criticism of this current triology it is that I do not think Hayden Christensen is a good enough actor to play Anakin well enough to allow me to emphathise with the character. Maybe 3 will change this..............